//
//  main.c
//  +4
//
//  Created by apple on 2016/12/5.
//  Copyright © 2016年 apple. All rights reserved.
//

#include <stdio.h>
#define PI 3.14159
int main(){
    float area,circum,radius;
    printf("What is the radius of your pizza?\n");
    scanf("%f",&radius);
    area=PI*radius*radius;
    circum=2.0*PI*radius;
    printf("Your basic pizza parameters are as hollows:\n");
    printf("circumference=%1.2f,area=%1.2f\n",circum,area);
    return 0;
}
  